I mean, they could try. It would toss nitroglycerin into the MAGA rage that's already forming. So yeah, go right ahead.
She could still be subpoena'd by Congress--House Oversight Committee already has--and I don't think she could plead the fifth on anything if she's already pardoned. So yeah, go ahead and do that.
They won't because there are almost certainly big Democratic donors on that list. And Bill. Both parties slow walked this whole thing for decades.
The AOC and Bernie types don't care about that, but they don't serve on the Oversight Committee. Still, just getting Maxwell there should stoke the fires.